SAXIFRAGACE.E. (sAXIFfiAGE FAMILY.) 14* 



opening at the apex between the styles. Erect shrubs, with opposite peti- 

 oled leaves, without stipules, and whitish or purplish flowers, in ample com- 

 pound cymes ; the marginal flowers mostly sterile, with the calyx lobes enlarged 

 and showy. 



1. H. arborescens, L. Smoothish; leaves ovate, acute or acuminate, 

 serrate, mostly rounded or cordate at the base; cymes crowded, flat-topped; 

 sterile flowers few or none. Banks of streams. June -July. Shrub 4- 

 8 high. Leaves 3' -6' long. 



2. H. radiata, Walt. Leaves ovate, acuminate, serrate, mostly cordate 

 at the base, white-tomentose beneath ; cymes flat-topped ; sterile flowers few. 

 Rich soil on the mountains. May-June. Shrub 4-8 high. 



3. H. quercifolia, Bartram Young branches and leaves densely to- 

 mentose ; leaves oval, sharply 5-lobed, serrate; cymes clustered, forming a 

 close oblong panicle ; sterile flowers large, numerous. Shady banks, Florida, 

 Georgia, and westward. May -June. Shrub 3-6 high. Leaves 4'- 8' 

 long. Sterile flowers whitish, turning purple. 



11. DECUMARIA, L. 



Flowers all fertile. Calyx tube turbinate, coherent with the ovarv, 7-10- 

 toothed. Petals valvate in the bud, oblong. Stamens 21 -30. Styles united, 

 persistent. Stigma thick, 7 - 10-rayed. Capsule 10- 15 ribbed, 7-10-celled, 

 bursting at the sides : the thin partitions at length separating obliquely into 

 numerous chaffy scales. Seeds numerous, suspended. A smooth climbing 

 shrub, with opposite ovate or oblong entire or serrate leaves, and numerous 

 odorous white flowers in a compound terminal cyme. 



1. D. barbara, L- Banks of streams. May -June. Leaves shining, 

 sometimes pubescent. Capsule, with the persistent style and stigma, urn- 

 shaped, pendulous. 



12. PHILADELPHUS, L. SYRINGA. 



Calyx tube turbinate, cohering with the ovary, the limb 4-5-parted, per- 

 sistent. Petals 4-5, convolute in the bud. Stamens 20-40, shorter than the 

 petals. Styles mostly 4, more or less united. Capsule mostly 4-celled. locu- 

 licidally 4-valved, many-seeded. Shrubs with simple opposite 3-5 ribbed 

 leaves, without stipules, and large white solitary or cymose flowers. 



1. P. grandiflorus, Willd. Branches and leaves pubescent; leaves 

 ovate or ovate-oblong, acuminate, sharply serrate ; flowers solitary, or 2 or 

 more in a terminal cyme ; calyx lobes ovate, acuminate, much longer than the 

 tube. Banks of streams, chiefly in the upper districts. April - May. Shrnb 

 6- 10 high, with long and slender branches. 



2. P. inodorus, L. Smooth ; leaves entire or nearly so, ovate or ovate- 

 oblong, acute ; calyx lobes ovate, acute, as long as the tube. Upper districts 

 of Alabama to South Carolina. May. Flowers smaller than in the last. 



3. P. hirsutus, Nutt. Hairy ; leaves small, ovate, acute, sharply ser- 

 rate; flowers 1-3 together, terminal, and on short lateral branches; calyx 

 lobes ovate, as long as the tube. Mountains, Alabama to North Carolina. 

 A small shrub. Leaves 1' long. Flowers 1' wide. 



